* {
	margin: 0;
	padding: 0;
}

body {
	min-width: 1200px;
	font-family:Microsoft YaHei;
}

.px20 {
	font-size: 20px;
}

.px18 {
	font-size: 18px;
}

.px16 {
	font-size: 16px;
}

.px14 {
	font-size: 14px;
}

.px12 {
	font-size: 12px;
}

header {
	height:50px;
	width: 100%;
	background:rgba(255,255,255,1);
	box-shadow:0px 5px 25px 0px rgba(221,221,221,1);
}

nav {
	height: 100%;
	width: 1200px;
	margin: 0 auto;
}

.imgbox{
	height: 50px;
	width: 30px;
	margin-right: 100px;
	line-height: 50px;
}

.top_img{
	width: 100%;
	height: 100%;
}

.left{
	float: left;
}

a{
	text-decoration: none;
}

li {
	list-style: none;
}

header .left ul {
	display: inline-block;
}

header .left ul li{
	display: inline-block;
	line-height: 50px;
	width: 100px;
	text-align: center;
}

header .right ul li{
	display: inline-block;
	line-height: 50px;
}

.clear:after{/*清除浮动*/
	content: "";
	display: block;
	height: 0;
	clear:both;
	visibility: hidden;
}

.clear::after{/*清除浮动*/
	content: "";
	display: block;
	height: 0;
	clear:both;
	visibility: hidden;
}

/* 清除number */
input[type='number']{-moz-appearance:textfield;}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {-webkit-appearance: none;margin: 0;}

.right{
	float: right;
}

.nav_active{
	color: #4DA5FF;
}

.pointer {
	cursor: pointer;
}

main {
	width: 100%;
}

.hederimg {
	display: inline-block;
	width: 40px;
	height: 40px;
}
